1 /* $OpenBSD: cms_cd.c,v 1.15 2019/08/11 11:04:18 jsing Exp $ */
2 /*
3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
4 * project.
5 */
6 /* ====================================================================
7 * Copyright (c) 2008 The OpenSSL Project. All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 *
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
19 * distribution.
20 *
21 * 3. All advertising materials mentioning features or use of this
22 * software must display the following acknowledgment:
23 * "This product includes software developed by the OpenSSL Project
24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 *
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 * endorse or promote products derived from this software without
28 * prior written permission. For written permission, please contact
29 * licensing@OpenSSL.org.
30 *
31 * 5. Products derived from this software may not be called "OpenSSL"
32 * nor may "OpenSSL" appear in their names without prior written
33 * permission of the OpenSSL Project.
34 *
35 * 6. Redistributions of any form whatsoever must retain the following
36 * acknowledgment:
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 *
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
53 */
54
55 #include "cryptlib.h"
56 #include <openssl/asn1t.h>
57 #include <openssl/pem.h>
58 #include <openssl/x509v3.h>
59 #include <openssl/err.h>
60 #include <openssl/cms.h>
61 #include <openssl/bio.h>
62 #include <openssl/comp.h>
63 #include "cms_lcl.h"
64
65 #ifdef ZLIB
66
67 /* CMS CompressedData Utilities */
68
69 CMS_ContentInfo *
cms_CompressedData_create(int comp_nid)70 cms_CompressedData_create(int comp_nid)
71 {
72 CMS_ContentInfo *cms;
73 CMS_CompressedData *cd;
74
75 /*
76 * Will need something cleverer if there is ever more than one
77 * compression algorithm or parameters have some meaning...
78 */
79 if (comp_nid != NID_zlib_compression) {
80 CMSerror(CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
81 return NULL;
82 }
83 cms = CMS_ContentInfo_new();
84 if (cms == NULL)
85 return NULL;
86
87 cd = (CMS_CompressedData *)ASN1_item_new(&CMS_CompressedData_it);
88
89 if (cd == NULL)
90 goto err;
91
92 cms->contentType = OBJ_nid2obj(NID_id_smime_ct_compressedData);
93 cms->d.compressedData = cd;
94
95 cd->version = 0;
96
97 X509_ALGOR_set0(cd->compressionAlgorithm,
98 OBJ_nid2obj(NID_zlib_compression), V_ASN1_UNDEF, NULL);
99
100 cd->encapContentInfo->eContentType = OBJ_nid2obj(NID_pkcs7_data);
101
102 return cms;
103
104 err:
105 CMS_ContentInfo_free(cms);
106 return NULL;
107 }
108
109 BIO *
cms_CompressedData_init_bio(CMS_ContentInfo * cms)110 cms_CompressedData_init_bio(CMS_ContentInfo *cms)
111 {
112 CMS_CompressedData *cd;
113 const ASN1_OBJECT *compoid;
114
115 if (OBJ_obj2nid(cms->contentType) != NID_id_smime_ct_compressedData) {
116 CMSerror(CMS_R_CONTENT_TYPE_NOT_COMPRESSED_DATA);
117 return NULL;
118 }
119 cd = cms->d.compressedData;
120 X509_ALGOR_get0(&compoid, NULL, NULL, cd->compressionAlgorithm);
121 if (OBJ_obj2nid(compoid) != NID_zlib_compression) {
122 CMSerror(CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
123 return NULL;
124 }
125 return BIO_new(BIO_f_zlib());
126 }
127
128 #endif
129